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Simplifying 2p2 + 7p + -8 = 0 Reorder the terms: -8 + 7p + 2p2 = 0 Solving -8 + 7p + 2p2 = 0 Solving for variable 'p'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -4 + 3.5p + p2 = 0 Move the constant term to the right: Add '4' to each side of the equation. -4 + 3.5p + 4 + p2 = 0 + 4 Reorder the terms: -4 + 4 + 3.5p + p2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 3.5p + p2 = 0 + 4 3.5p + p2 = 0 + 4 Combine like terms: 0 + 4 = 4 3.5p + p2 = 4 The p term is 3.5p. Take half its coefficient (1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. 3.5p + 3.0625 + p2 = 4 + 3.0625 Reorder the terms: 3.0625 + 3.5p + p2 = 4 + 3.0625 Combine like terms: 4 + 3.0625 = 7.0625 3.0625 + 3.5p + p2 = 7.0625 Factor a perfect square on the left side: (p + 1.75)(p + 1.75) = 7.0625 Calculate the square root of the right side: 2.657536453 Break this problem into two subproblems by setting (p + 1.75) equal to 2.657536453 and -2.657536453.Subproblem 1
p + 1.75 = 2.657536453 Simplifying p + 1.75 = 2.657536453 Reorder the terms: 1.75 + p = 2.657536453 Solving 1.75 + p = 2.657536453 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + p = 2.657536453 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + p = 2.657536453 + -1.75 p = 2.657536453 + -1.75 Combine like terms: 2.657536453 + -1.75 = 0.907536453 p = 0.907536453 Simplifying p = 0.907536453Subproblem 2
p + 1.75 = -2.657536453 Simplifying p + 1.75 = -2.657536453 Reorder the terms: 1.75 + p = -2.657536453 Solving 1.75 + p = -2.657536453 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + p = -2.657536453 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + p = -2.657536453 + -1.75 p = -2.657536453 + -1.75 Combine like terms: -2.657536453 + -1.75 = -4.407536453 p = -4.407536453 Simplifying p = -4.407536453Solution
The solution to the problem is based on the solutions from the subproblems. p = {0.907536453, -4.407536453}
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